<div class="container" [style.background-position]="(answerCoverIndex*positionBase)+'%'+'  0'">
   <div class="answer_content">
      <span>{{questions[currentQuestionIndex]?.num}}.	</span>{{questions[currentQuestionIndex]?.content}}
   </div>
  <div class="select_list" >
    <div class="btn_1"  *ngFor="let option of questions[currentQuestionIndex]?.options;let i = index;" (click)="selectAnwser(questions[currentQuestionIndex],i,questions[currentQuestionIndex].num)">
      {{option?.num}}{{option?.content}}
    </div>
  </div>
  <div class="question_schedule">{{currentQuestionIndex+1}} / {{questions.length}}</div>
</div>

